2. Once you see the options in App Info, Select Storage (video time: 0.14-0.16):

3. On the storage screen you should see the option to Clear Data and Clear Cache. In the video example above it was only required to click Clear Data to zero out the B(bytes) on both Data and Cache. However, in some cases if the numbers are not both zeroed out you’ll need to Clear Cache as well (video time: 0.19-0.21):